Jam-freeing-type slider



April 21, 1959 L. H. MORIN 2,832,578

JAM-FREEING-TYPE SLIDER Filed Jan. 11. 1954 s Sheets-Sheet 1 INVENTORLOUIS H. MORlN ATTORNE qj April 21, 1959 H. MORlN JAM-FREEING-TYPESLIDER 3 Sheets-Sheet 2 Filed Jan. 11. 1954 INVENTOR LOUIS H. MORiNATTORN April 21, 1959 L. H. MORIN 2,832,578

JAM-FREEING-TYPE SLIDER.

Filed Jan. 11. 1954 3 Sheets-Sheet 3 T a-1E1,

m ivllllllllgllllgi ig l lg l la INVENTOR LOUIS H- MORIN ATTORNEJAM-FREEING-TYPE SLIDER Louis H. Morin, Bronx, N.Y.

Application January 11, 1954, Serial No. 403,177

8 Claims. (Cl. 24205.15)

This invention relates to sliders for use on separable fastenerstringers to couple and uncouple the same. More particularly, theinvention deals with what I term a jam-freeing slider, wherein the backor bottom wall structure of the slider includes a yielding or movableplate or wall part which will facilitate freeing the slider if the samebecomes jammed by engagement with foreign elements positioned betweenthe slider and the stringer scoops.

Still more particularly, the invention deals with a slider structure,wherein the slider body generally comprises top and bottom members whichare spaced and integrally joined through a connecting web and, wherein,the bottom member has means for supporting and guiding and otherwisecontrolling operation of a plate or wall part, which latter is movablerelatively to the top wall of the slider body in providing thejam-freeing properties to the slider.

The novel features of the invention will be best understood from thefollowing description, when taken together with the accompanyingdrawing, in which certain embodiments of the invention are disclosedand, in which, theseparate parts are designated by suitable referencecharacters in each of the views and, in which:

Fig. 1 is a side view of one form of slider, which I employ, with partof the construction broken away and in section and diagrammaticallyillustrating the use of the slider.

Fig. 2 is a view, generally similar to Fig. 1, showing only a part ofthe construction and showing parts in a different position.

Fig. 3 is a section on the line 3-3 of Fig. 1.

Fig. 4 is a view, similar to Fig. 3, showing the parts in a differentposition.

Fig. 5 is a view, similar to Fig. 1, showing half of the slider insection and showing a modification, with part of the structure indifferent position as shown by dot, and dash lines.

Fig. 6 is a bottom plan view of the structure shown in Fig. 5.

Fig. 7 is a side view of a portion of the bottom of a slider, similar tothat shown in Fig. 5, and showing a modification.

Fig. 8 is a view, similar to Fig. 7, with part of the construction insection and showing another form of slider construction.

Fig. 9 is a bottom plan view of the structure shown in Fig. 8.

Fig. 10 is a longitudinal sectional view through a modified'form ofslider which I employ.

Fig. 11 is a bottom plan view of the structure shown in Fig. 10.

Fig. 12 is a view, similar to Fig. 10, showing only a part of theconstruction and showing a modification.

Fig. 13 is a section on the line 1313 of Fig. 12; and

I Fig. 14 is a plan view of part of the slider shown in Figs. 12 and 13detached.

For purposes of description, the several sliders'shown portions have, ontheir lower surfaces, downwardly pro- 2,882,578 Patented Apr. 21, 1959in Figs. 1 to 14, inclusive, may be said to comprise slider bodiesdefined by top and bottom members, which are integrally joined by aconnecting web at the Wide or double channelled end of the slider body.The top mem ber of the slider body, in most instances, comprises aflanged wall, the flanges partially forming the channels of the sliderbody and, to this wall, is connected a pull, which may be an ordinarytype of pull, or may be of the lock or automatic lock type and differenttypes of pulls will be shown by way of illustration in certain of theviews.

The bottom member, on the other hand, in all instances, provides meansfor guiding what may be termed a backplate or wall part, or member, tomove toward and from the top wall in providing the jam-freeingproperties to the slider. This part of the slider bottom member, in someinstances, includes flanges to complete the formation of the channels ofthe slider body; whereas, in other instances, is movable with respect toa flanged part or member. Further, with some types of constructionshown, spring means is employed to tensionally maintain the movable wallpart in a predetermined position. In all other instances, cam surfacesare provided in guiding the movable wall part and this part moveslongitudinally of the slider body as well as toward and from the topwall.

Considering now the structure shown in Figs. 1 to 4, inclusive, in thesefigures 25 represents the top member, or wall of the slider body, 26 thebottom member or wall, 27 the connecting web. In Figs. 1 to 4,inclusive, the bottom member or wall 26 includes the side flanges 28 fordefining, in conjunction with the web 27, the channels of the sliderbody. The wall 25 in this construction is not flanged. At 29 I haveshown a pivot portion on the wall 25 for pivotal mounting of the pull 30thereon, as with other devices of this kind.

The web 27 has an extending guide lug 31 for guiding scoops into thesingle channel end of the slider body, the scoops being of a structureto operate in conjunction with this guide lug.

In Figs. 1 and 2 of the drawing, I have indicated at 32 diagrammaticallya few scoops in order to indicate the jamming of a foreign element such,for example, as part of a garment noted at 33 in Figs. 1 and 2. Theinner surface of the bottom wall 26 has, at opposite sides of the web27, bevelled surfaces 34 and the wall, at the contracted or single endof the slider, has an elongated aperture 35.

At 36 I haveshown a movable plate or part, which may be said to comprisea backplate, thispart being generally of the contour shown in plan inFigs. 3 and 4, in other words, is recessed as seen at 37 to slide freelyover the web 27 and guide 31. The part 36 otherwise generally conformsto this interior channelled portion of the wall 26, in other words,includes a reduced extension 38 which operates in a single channelledend of the slider body.

The part 36, or the end 38 thereof, has an enlarged outwardly extendingdisc portion 39 which operates upon the inner surface of the wall 26, asclearly shown, thus maintaining the end 38 spaced from said surface. The

.disc 39 has, centrally thereof, an outwardly projecting end portion ofthe part 36 is bent downwardly to a slight extent as noted in Figs. 1and 2 and these bent jecting lugs 41, which operate upon the bevelledsurface 34 in longitudinal movement of the part 36 in the slider bodyfrom the position shown in Fig. 1, which may be said to be a jammedposition to the position shown in 'Fig. 2, where the fabric or garment33 is shown in a position to be freed readily from the slider. With theconstruction shown in Figs. 1 to 4, inclusive, the part 36 moves towardand from thewall 25, as well as longitudinally of the slider -body. p

. In Figs. Sand 6 of the drawing, I have shown a modified form of sliderstructure, in which 42 represents the top member or wall part, 43 thebottom member, 44 the connecting web integrally joining said members.The member 43 can be said to be a bar extension of the web 44. At 45 Ihave shown the plate or wall part movable toward and from the member orwall 42. With this construction, the wall 42 includes the flanges 46,partially defining the channel structure of the slider body. The wall 42is apertured, as seen at 47, to receive a lockpin portion 48 of a pull'49 pivoted toga bearing 50 on the wall 42, as with other devices ofthis type and kind.

Witli the structure shown in Fi s. and 6, the nieinbe 43 foinis a guidefor hc ybke-shapd end portion 51 of the plate or wall part 45. It alsoforms a support for a pin 52 which extends at opposed sides of themember 43 and form support for rollers 53, the latter being held againstdisplacement by heading the ends of the pin 52, as seen at 54.

, The plate or, wall part 45 has, at the inner end of the longitudinalopening 45a thereof, which defines the yoked end 51, a bevelled wall 55.This wall engages the member 43 in checking movement of the part 45 inone direction. At opposite sides of the bevelled wall 55, the part 45has recesses 56, in which the rollers 53 operate, the recesses havingcurved or bevelled wall portions 57 which help to check movement of thepart 45 in the opposite direction. This last checking movement maintainsthe part 45 in alinement with the part or wall 42, in other words, keepsthe inner adjacent surfaces of wall 42 and part 45 in predeterminedalinement with respect to each other in formal o eration of the slider.

It will be noted that th'epart 45, in the construction shown, includesthe inwardly extending side flanges 58, similar to the flanges 46. I, ,pI

It will also be noted that, in Fig. 5 of the drawing, the part 45 isshown in its normal position in full lines. However, in dot and-dashlines, this part is shown in its outwardly extended position, or whatmay be termed the jam-freeing position.

In Fig. 7 of the drawing, I have shown a slight modification of thestructure shown in Figs. 5 and 6. In this figure, part of the member orbar extension 43' only is shown, as well as only a portion of the wallpart 45'. The part 45 difiers from the part 45 in having an out wardlyextending elongated cylinder portion 59, in which is mounted a pin 60actuated by a spring 61 within the cyl-' inder. The pin 60 engages themember 43' and serves to tensionally maintain the part 45' in its normaloperative position, in other words, a position similar to the fulllin'eposition shown in Fig. 5'. It will be understood, however, that, inmoving the part '45" into a jam-freeing position, this operation takesplace against the action of the spring 61.

In Figs. 8 and 9 of the drawing, I have shown a further modification ofthe structure shown in Fig. 7, as well as that shown in Figs. 5 and 6.In other words, the member or bar extension 43" has been modified inform and has an elongated aperture 62 for receiving a pin 52", similarto the pin 52. Here again, in Figs. '8 and 9, a bottom part, plate orwall 63 is employed which has, instead of the recesses 56, raisedbearing portions 64 for receiving the ends of the pin 52". The part 63has a long cylinder portion 65, in which is mounted a pin 60', similarto the pin 60, the latter-being actuated by a spring 61' in saidcylinder. It will be understood that, with the structure shown in Figs.8 and 9, the wall part 63- can move relatively to the top wall of theslider body against the actionof the spring-pressed pin 60' and;

in this operation, the pin 52" moves outwardly in the inclined aperture62, which is provided in the member 43".

The part 63 has flanges, as at 66, similar to the flanges 58, of Figs. 5and 6 of the drawing.

In Figs. 10 and 11 of the drawing, I have shown another form of slider,wherein 67 represents one member of the slider body, 68 the othermember, or bar extension of the web, and 69 the slider web integrallyjoining said members. At 70 is shown the plate or wall part movablerelatively to the member 67. As the various actions of the part, similarto the part 70, are the same, or substantially the same through most ofthe showings, the brief description of the several showings will belimited to the difference in structural features.

In Fig. 10, I have shown the top wall or member 67 of the type and kindemploying an automatic lock for retainingthe slider against movement onthe stringers, the wall 67 having the raised bearing portion 72 for thepivot 72 of the lock element 71. Pivot 72 comprises a pivot opening 72'ain the bearing portion 72 and a pair of pivot shafts which extend towardeach other from opposite sides of the opening 72a in the lock element71, with which they are integrally formed, one of these shafts beingshown at 72'b. The foregoing construction of pivot 72' is shown indetail and claimed in applicants copending application Ser. No. 340,560,filed March 5, 1953. A spring 73 is provided between one end of the lockelement and the web 69, as shown, to normally support the looking pins74 of the element 71 in operative position. The element 71 has aprojecting nose 75, at its free end, adapted to strike a yoke 76 on thewall 67 in checking outward movement of the lock element. Thepull, shownin part at 77, actuates the element 71 in movement thereof intoinoperative position. The pull is movably attached or coupled to wall 67by means of the pull axle 77 which extends through the aperture 71' oflock element 71, the axle 77' being connected to pull 77 by a pair ofarms one of which is shown at 77a.

The bottom member 68 of the slider body in the construction shown, is inthe form of an elongated bar having longitudinally spaced pins 78. Thepins project at opposite sides of the bar, as clearly seen in Fig. 11 ofthe drawing, and operate in cam-shaped recesses 79 in the lower surfaceof the plate or part 70. This construction is generally similar to thestructure of Figs. 5-6 having the rollers 53 operating in the recesses56 and engaging their bevelled walls 57, thus no further descriptionwith regard to the function and operation of the part 70 need bedescribed. The part 70 includes the inwardly projecting flanges 80which, in conjunction with the flanges 81 of the member 67, define thechannels of the slider body.

In Figs. 10 and 11, the part or plate 70 may be said to comprise anO-sh'aped plate from a standpoint that the plate completely envelopesthe member 68 and, in this respect, differs from the fork or U-shapedplates shown in the earlier figures. In like manner, the structuresshown in Figs. 12 to 14, inclusive, all employ the O-type of plate and,as the top member structure can be identical with the structure shown inFig. 10, or that shown in Figs. 5 and 1 of thedrawing, no showing of thetop member is included in Fig. 12.

In Fig. 12 of the drawing, I have indicated at 82 part of the web of oneof said top wall structures and at 83 is shown the bottom memberintegral with the web 82, the member being in the form of an elongatedbar, similar to the bar 68 and includes downwardly directed rivetmembers 84 spaced longitudinally thereof. The bar 83 has a channelledextension 35 at one end, the channel being partially closed by aretaining plate 86 fixed to the bar by the rivet members 84, the plate86 extending at opposite sides of the bar, as noted at 87 in Fig. 13 ofthe drawing. 1 These extensions form stops checking 'unwanted outwardmovement of the movable plate or wall part 8.8a?

The plate or wall part 88 is recessed, as seen at.89, to receive theextensions 87 and, normally, the parts assume the position shown in Fig..13 of the drawing. However, it will be understood that, in movement ofthe wall part 88, the same moves outwardly in the direction of the stops87 and also moves longitudinally of the slider body, the latter movementbeing controlled and guided by interengaging bevelled surfaces. In Fig.12 of the drawing, one of the interengaging bevelled surfaces is thebevelled surface 90 at one end of the bar 83 and the surface 91 on thewall part 88, as shown at the left of said figure. The other pair ofsurfaces are indicated at 92 and 93, respectively, at opposed sides ofthe recess 89. A coil spring 94 is arranged in the channel of extension85 and operates upon the end 95 of the wall 88 and normally supportssaid wall in the position shown in Figs. 12 and 13. The wall part 88 isflanged, as seen at 96, to partially define the channel of the sliderbody. The surfaces 91 and 93 are clearly shown in Fig. 14.

It may be noted here that the guiding lug !or ridge which extends fromthe inner end of the web, as shown at 31 in Figs. l-4 and at 31' in Fig.12, is useful to facilitate the coupling and uncoupling of thestringers. As will be understood, these lugs or ridges may be providedon any of the sliders disclosed, or may be dispensed with where thesliders are used on stringers having conven tional scoops.

The operation of the sliders in the event a jam occurs is believed to befairly indicated by the foregoing description but may be furtherdetailed as follows. Using the slider of Figs. 1-4 as an example, let itbe assumed that foreign matter, such as the cloth 33 becomes jammedbetween the scoops and the plate 36, as shown in Fig. 1, so that theslider cannot be moved any further in the closing direction. The naturalinclination of the zipper user is to try to move the slider the otherway, and when this happens, the jam will be relieved. Thus, when theslider is moved so as to uncouple the stringers, the plate 36 tends tobe moved in the direction of the web end of the slider, as shown in Fig.2, by virtue of the friction which develops between the scoops and thesurface of the plate. With the plate in the position shown in Fig. 2, itis apparent that at the point of the jam the distance between the plateand the top or front wall of the slider has been increased, thusenabling the cloth 33 to be removed. Removal of the cloth is furtheraided by the movement of the plate in the direction of the web end. Withthe slider unjammed or freed, it can then be moved to close thestringers and during this action the plate 36 slides back to its Fig. 1position under the influence of the frictional force created by thescoops at their contact with the reduced end portion 38 of the plate.The same operation is followed in the case of the other modificationsand substantially the same action takes place, it being evident that inthese cases all of the back plate may move away from and toward thefront wall of the slider.

With all of the different forms of slider structures shown, the movableplate or wall part is guided for movement at least toward and from thetop wall of the slider and, in all instances, is also movablelongitudinally of the slider body during the first mentioned movement.In all instances, the bottom member of the slider body provides a guidefor said movable plate or wall, as well as providing means controllingsuch movement or supporting means which controls the movement. With theseveral slider structures, any experience of jamming that may take placein the slider operation by having a part of a garment or other foreignmaterial come between the slider body and the stringer scoops, as noted,for example, in Figs. 1 and 2 of the drawing, can be rectified byreversing the movement of the slider, thus facilitating removal of thegarment or other foreign matter, whereupon the slider is restored to itsnormal operating function.

It will be observed that in each modification there is a cammingengagement between the movable back plate or wall part and the bottommember of the slider by virtue of which the back plate is movable awayfrom and toward the front slider wall, as well as movable longitudinallyof the slider. Thus, in Figs. 1-4, the plate 36 has a camming engagementwith bottom member 26 through the contact between the lugs 41 and thesurface 34; in Figs. 5-6, the plate 45 has a camming engagement withbottom member 43 through the contact between rollers 53 and the curvedsurfaces of recesses 56; in Fig. 7 the camming engagement is similar tothat of Figs. 5-6; in Figs. 8-9 the back plate 63 has a cammingengagement with bottom member 43" by means of the contact of the pin52'? with the surfaces of the aperture 62; in Figs. 10-11 the contact ofthe surfaces of recesses 79 with the pins 78 provide the cammingengagement; in Figs. 12-14 a camming engagement results by contactbetween surfaces and 91 and between surfaces 92 and 93.

Having fully described, my invention, whatI claim as new and desire tosecure by Letters Patent is:

1. A jam-freeing slider for separable fastener stringers, said slidercomprising a body defined by top and bottom members, a web adapted tojoin and space said members, the top member having means adapted forcoupling a pull therewith, the bottom member including a wall partmovable toward and from the top member, and cooperating means on saidbottom member and wall part forlimiting movement of said wall part withrespect to said bottom wall, having an elongated aperture at one endportion and a bevelled inner surface at the opposed end portion, andsaid movable wall part having means, at end por tions thereof, forenabling said wall part to move toward and from said top member.

2. A ja.mfreeing slider for separable fastener stringers, said slidercomprising a body defined by top and bottom members, a web adapted tojoin and space said members, the top member having means for coupling apull therewith, the bottom member including a wall part movable towardand from the top member, said wall part and top member being adapted toreceive therebetween the scoops of a pair of stringers and to makecontact with said scoops, cooperating means on said bottom member andwall part for limiting movement of said wall part with respect to saidbottom member, said last named means comprising spaced pins on saidbottom member having ends projecting at opposite sides thereof, andmeans on said wall part forming recesses having bevelled surfacesoperatively engaging the projecting ends of said pins, said wall parthaving an elongated aperture, in which said bottom member is disposed,and said wall part having inwardly digeced side flanges partiallydefining channels in the slider 3. A jam-freeing slider for separablefastener stringers, said slider comprising a body defined by top andbottom members, a web adapted to join and space said members, the topmember having means for coupling a lock element therewith, the bottommember including a wall part movable toward and from the top member,cooperating means on said bottom member and wall part for limitingmovement of said wall part with respect to said bottom member, said lastnamed means comprising spaced pins on said bottom member having endsprojecting at opposite sides thereof, means on said wall part formingrecesses having bevelled surfaces operatively engaging the projectingends of said pins, and a tensionally actuated lock element pivotallycoupled to said means on said top member.

4. A jam-freeing slider for separable fastener stringers, said slidercomprising a body defined by top and bottom members, a web adapted tojoin and space said members, the top member having means for coupling apull therewith, the bottom member including a wall part movable towardand from the top member, said wall part and top member being adapted toreceive therebetween the scoops of a pair of stringers and to makecontact with said scoops, cooperating means on said bottom member andwall part for limiting movement of said wall part with respect to saidbottom member, said bottom member comprising an elongated bar, said wallpart having an elongated aperturc, in which the bar is disposed, saidlast named means comprising interengaging bevelled surfaces on the barand wall part, and a plate in said aperture secured to the outer side ofthe bar and engageable by the wall part for retaining the wall partagainst displacement from said bar.

5. A jam-freeing slider for separable fastener stringers, said slidercomprising a body defined by top and bottom members, a web adapted tojoin and space said members, the top member having means for coupling apull therewith, the bottom member including a wall part movable towardand from the top member, cooperating means on said bottom member andwall part for limiting movement of said wall part with respect to saidbottom member, said top member having inwardly directed side flangespartially defining a channel in the slider body, a pull tab pivotallymounted in connection with said top member, said wall part havinginwardly extending flanges cooperating with the flanges of the topmember in defining the channel of said slider body, and said wall parthaving a recess for receiving and at least partially enclosing thebottom member, said recess being of greater length than said bottommember to enable the wall part to move longitudinally thereof.

6. A slider for separable fastener stringers comprising top and bottommembers, a web at one end portion of the slider integrally joining saidmembers, said top member having means for attaching a pull thereto, anda movable plate part associated with the bottom member and havingsubstantially the same length and substantially the same outline shapeas the top member, said plate part having a recess therein at thatportion thereof adjacent the web end portion of the slider, said platepart as a unit being movable longitudinally of the slider and having acamming engagement with the bottom member by means of which the platepart is movable away from and toward the top member as well as movablelongitudinally thereof, said plate part and top member being adapted toreceive therebetween and make contact with the scoops of a pair offastener stringers, and said slider, when jammed on the stringers byvirtue of foreign matter coming between said scoops and the slider,being adapted to become free of the jam by virtue of the movability ofthe plate part.

7. A slider according to claim 6 in which said recess in the movableplate part receives said web therein.

8. A slider according to claim 6 in which said recess in the movableplate part at least partially encloses said bottom member.

References Cited in the file of this patent UNITED STATES PATENTS2,090,124 Hossmann Aug. 17, 1937 2,532,367 Lyeth Dec. 5, 1950 2,542,547Marinsky Feb. 20, 1951 2,683,911 Backer July 20, 1954 FOREIGN PATENTS564,703 Great Britain of 1944 589,225 Germany of 1933 638,646 Germany of1936 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Pat'ent No,2382,5723 April 21, 1959 Louis Morin It is hereby certified that errorappears in the printed specification I of the above numbered patentrequiring correction and that the said Letters Patent should read ascorrected below.

Column 2, line 55, for "in a" read in the column 4, line 30 for"looking" read locking Signed. and sealed this 18th day of August 1959,

(SEAL) Attest:

KARL Ii. AXLINE v ROBERT C. WATSON Attesting Oflicer Y Commissioner ofPatents

